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arXiv 1306.6645hep-thcond-mat.stat-mechmath-phmath.MP
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模糊球上标量场的有效action和相变

Effective action and phase transitions of scalar field on the fuzzy sphere

Alexios P. Polychronakos

摘要:

研究了模糊双球上的标量场理论,该理论表示为一个包含动力学、质量和四次相互作用项的厄米矩阵模型。在对称的大N政权的有效行动进行了分析,使用自洽的引导方法,固定其形式的第六阶的特征值,并给出了一个封闭的表达式,所有订单的二次不变的矩阵,有效的接近半圆形分布。使用这个行动的本征值分布计算的相互作用理论在适当的标度限制和相变从无序对称有序相确定,包括非微扰效应。

英文摘要:

Scalar field theory on the fuzzy two-sphere, represented as a hermitian matrix model that includes kinetic, mass and quartic interaction terms, is studied. The effective action in the symmetric large-N regime is analyzed using a self-consistent bootstrap method which fixes its form up to sixth order in the eigenvalues and gives a closed expression to all orders in the quadratic invariant of the matrix, valid close to semicircular distributions. Using this action the eigenvalue distribution is calculated for the interacting theory in the appropriate scaling limit and the phase transition from the disordered to the symmetric ordered phase is identified, including nonperturbative effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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